# File lib/fog/aws/requests/iam/update_assume_role_policy.rb, line 21
        def update_assume_role_policy(policy_document, role_name)
          request({
            'Action'          => 'UpdateAssumeRolePolicy',
            'PolicyDocument'  => Fog::JSON.encode(policy_document),
            'RoleName'        => role_name,
            :parser           => Fog::Parsers::AWS::IAM::Basic.new
          }.reject {|_, value| value.nil?})
        end